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Fix for bug #11759990 - "52354: 'CREATE TABLE .. LIKE ... '

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STATEMENTS FAIL".

Attempt to execute CREATE TABLE LIKE statement on a MyISAM
table with INDEX or DATA DIRECTORY options specified as a
source resulted in "MyISAM table '...' is in use..." error.
According to our documentation such a statement should create
a copy of source table with DATA/INDEX DIRECTORY options
omitted.

The problem was that new implementation of CREATE TABLE LIKE
statement in 5.5 tried to copy value of INDEX and DATA DIRECTORY
parameters from the source table. Since in description of source
table this parameters also included name of this table, attempt
to create target table with these parameter led to file name
conflict and error.

This fix addresses the problem by preserving documented and
backward-compatible behavior. I.e. by ensuring that contents
of DATA/INDEX DIRECTORY clauses for the source table is
ignored when target table is created.
This commit is contained in:
Dmitry Lenev
2011-06-09 16:54:12 +04:00
parent b1fc801ad1
commit 95f1b6762b
3 changed files with 51 additions and 0 deletions
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5
sql/sql_table.cc
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@ -4582,6 +4582,11 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST* src_table,
local_create_info.options|= create_info->options & HA_LEX_CREATE_TMP_TABLE;
/* Reset auto-increment counter for the new table. */
local_create_info.auto_increment_value= 0;
/*
Do not inherit values of DATA and INDEX DIRECTORY options from
the original table. This is documented behavior.
*/
local_create_info.data_file_name= local_create_info.index_file_name= NULL;
if ((res= mysql_create_table_no_lock(thd, table->db, table->table_name,
&local_create_info, &local_alter_info,